5-32
5.1.5 Table of Special Internal Relays for FP-e
The special internal relays turn on and off under special conditions. The on and off states are not output
externally. Writing is not possible with a programming tool or an instruction.
FP-e
Relay No.
Name
Description
R9000
Self-diagnostic error
flag
Turns on when a self-diagnostic error occurs.
⇒
The content of self-diagnostic error is stored in DT90000.
R9001 Not
used
-
R9002 Not
used
-
R9003 Not
used
-
R9004 Not
used
-
R9005
Backup battery error
flag
(non-hold)
Turns on for an instant when a backup battery error occurs.
R9006
Backup battery error
flag
(hold)
Turns on and keeps the on state when a backup
battery error occurs. Once a battery error has been
detected, this is held even after recovery has been
made. It goes off if the power supply is turned off, or if
the system is initialized.
R9007
Operation error flag
(hold)
Turns on and keeps the on state shen an operation error
occurs.
⇒
The address where the error occurred is stored in DT9017.
(Indicates the first operation error which occurred).
R9008
Operation error flag
(non-hold)
Turns on for an instant when an operation error occurs.
⇒
The address where the operation error occurred is stored
in DT9018. The contents change each time a new error
occurs.
R9009 Carry
flag
This is set if an overflow or underflow occurs in the
calculation results, and as a result of a shift system
instruction being executed.
R900A >
Flag
Turns on for an instant when the compared results become
larger in the comparison instructions.
R900B =
Flag
Turns on for an instant,
-
when the compared results are equal in the comparison
instructions.
-
when the calculated results become 0 in the arithmetic
instructions.
R900C <
Flag
Turns on for an instant when the compared results become
smaller in the comparison instructions.
R900D
Auxiliary timer
instruction flag
Turns on when the set time elapses (set value reaches 0) in
the timing operation of the F137(STMR)/F183(DSTM)
auxiliary timer instruction.
The flag turns off when the trigger for auxiliary timer
instruction turns off.
R900E
Tool port
communication error
Turns on when a communication error at Tool port has
occurred.
R900F
Constant scan error
flag
Turns on when the scan time exceeds the time specified in
system register 34 during constant scan execution.
This goes on if 0 has been set using system register 34.
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Содержание FP-X
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